Revert "Rename internal library dart:_collection-dev to dart:_internal."

runtime/lib/object_patch.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 patch class Object {
 
   // The VM has its own implementation of equals.
   bool operator ==(other) native "Object_equals";
 
   // Helpers used to implement hashCode. If a hashCode is used, we remember it
@@ skipping 25 matching lines @@
 
   _noSuchMethod(bool isMethod,
                 String memberName,
                 int type,
                 List arguments,
                 Map<String, dynamic> namedArguments)
       native "Object_noSuchMethod";
 
   /* patch */ noSuchMethod(Invocation invocation) {
     return _noSuchMethod(invocation.isMethod,
-                         _collection_dev.Symbol.getName(invocation.memberName),
+                         internal.Symbol.getName(invocation.memberName),
                          invocation._type,
                          invocation.positionalArguments,
                          _symbolMapToStringMap(invocation.namedArguments));
   }
 
   /* patch */ Type get runtimeType native "Object_runtimeType";
 
   // Call this function instead of inlining instanceof, thus collecting
   // type feedback and reducing code size of unoptimized code.
   bool _instanceOf(instantiator,
                    instantiator_type_arguments,
                    type,
                    bool negate)
       native "Object_instanceOf";
 
   // Call this function instead of inlining 'as', thus collecting type
   // feedback. Returns receiver.
   _as(instantiator, instantiator_type_arguments, type) native "Object_as";
 
   static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
     var result = new Map<String, dynamic>();
     map.forEach((Symbol key, value) {
-      result[_collection_dev.Symbol.getName(key)] = value;
+      result[internal.Symbol.getName(key)] = value;
     });
     return result;
   }
 
   int get _cid native "Object_cid";
 
   _leftShiftWithMask32(count, mask)  {
     return (this << count) & mask;
   }
 }